Chimney



Dec. 8, 1931. a. 1.. FLAHERTY CHIMNEY Filed March 22, 1930 2 Sheets-Sheet l gwuenkz 1931- B. L. FLAHERTY 1,835,702

CHIMNEY Filed March 22, 1950 2 Sheets-Sheet 2 gwuemtoz attomq H chimney in such manner as to Patented Dec. 8, 19351 T A T E S BURT L. FLAHE'RTY, OF DAYTON,

MENTS, TO ennrnannne'rmo EQUIPMENT; conronnrron; or DAYTONpOI-IIQ, econ PORLATION OF OHIO CHIMNEY Application filed March 22, 1930. "Serial No. 438,087.

This invention relates to chimneys and has special reference to the construction of the lower parts of such chimneys.

One important object of the invention is to provide an improved chimney construction so to provide an improved chimney construction wherein a curved bottom is provided at the breeching opening which curves upwardly and rearwardl y from the bottom of said opening into the back wall of the chimney.

A third important object of the invention is to provide an improved chimney construction wherein the chimney, at the junction of the breeching opening and vertical parts is interiorly enlarged and shaped at the front and back to provide a curved path for the gases of combustion.

A fourth important object of the invention is to provide an improved chimney construction having a curved flue portion of the kind above noted and provided with a soot and cinder chamber below said curved flue portion.

With the above and other objects in View, the invention consists in general of certain novel details of construction and combina-.

tions of parts hereinafter fullydesc-ribed, illustrated in the accompanying drawings and specifically claimed.

In the accompanying drawings like characters of reference indicate like parts in the several views, and:

Figure l is a side elevation partly showing a vertical section taken centrally through the front andback walls of the chimney;

Figure 2 is a section of the completed chimney on the line 2-2 of Figure 1;

Figure 3 is an enlarged section similar to Figure l but showing the chimney partly completed;

Figure 4- is a sectionon the line H of F igure 3; I it it I Inthe construction of a chimney as here shown there is provided the usual baseor founda ion 1O principallybelow the ground.

On this is erected a chimneyhavinga front wall 11, rear wall 12 andsidewalls13.----In oneiof these walls is formed theusual' cleanout door 14 and the front wall 11 provided at some distance above the'base' with the breeching opening 15wherein isreceivedthe terminal end of abreeching 16. I Extending from one side wall to the other and slightly below thelevelof the interior bottom face of the breeching are spaced T-s-l-7 and at the rear'wall there is similarly positioned an angle bar 18. At the front of the grid thus formed is a horizontal door 7 frame 19 normallysupporting a trap door 20 forming part of the bottom of the chimney flue. Bridging the angle bar and Ts are bricks 21 which form, with the metal parts,

the roof or a'soot or cinderpit '22:. Successive courses of 'bricks 23 aresupported on the rear of this floor and the forward faces of these bricks are so formedas to present a smooth cylindrical surface 24: merging into the floor at its forward end and into the inner face of the rear wall 12 at its rear and upper end. Thissurface is preferably grouted with fire clay so as .to' eliminate the results of. any irregularities. The inner angle of the above the openingfrl5 is chamfered as at 25,and cut back at this chamferedportion as-at 26. For some distance above the par-tsjust described the internal angles atthe junction of the chimney walls are-filleted as at 27 to eliminate any eddies or dead air spaces which could tend to retard flow through the chimney. It will be noted that the distance between the surfaces 24 and 25 is considerably greater than the height of the breeching or the distance between the, front and rear chimney walls. Also, the distance between the side walls is greater than the width of the breeching.

By this means gases from the breeching pass first into an enlarged chamber having 01110, ASSIGNOR, BY planer Ann Imsnn ASSIGN- inthe f brick work. front wall lljust' the upper part ofv the'breeching is front and rear walls shaped to change the direction of flow of such gases from horizontal to vertical in a smooth and easy manner without setting up eddies or producing 5 back pressure in the breeching. This chamber may be termed an expansion chamber and from the expansion chamber the gases i pass easily into the vertical or uptake portion of the chimney also without producing lo dd it '7, 7 .7 There has thus been provided a simple and eflicient device of the kind described and for r the purpose specified.

Itis obvious that changes may be made in 15 the form and construction of the invention withoutdeparting from the principles thereof. It is not, therefore, desired to confine the invention to the exact form herein shown and described but it is desired to include all 1 9 suchas come within the scope claimed.

- '.Having thus describedthe invention, what is claimed-is V 1. The combination with a chimney having front, rear and side walls, said front wall having an inlet'o'pening'; of a'floor substantially level with the bottom of said opening at its front edge and curving from line spaced from the front edge upwardly to the inner surface of the rear wall, the inner '3 top edge of the opening being chamfered sufficiently to permit free flow of gases there past, the curved flue thus formed being of greater cross-sectional area than the opening to form an expansion chamber.

2. The combination witha chimney having front, rear-and, side walls, said front 7 wall having an inlet opening; of a floor substantially level with the bottom of said opening at its front edge'and curving from 4. a line spaced from the front edge upwardly to the inner surface of the rear wall, the inner top edge of the opening being chamfered sufiiciently to permit free flow of gases therepast, the curved flue thus formed being of greater cross-sectional area than the open- 1 ing to form an expansion chamber, said floor being spaced above the bottom of the chimney to form a soot chamber, said chimney havinga door affording access to the soot chamber from-outside the chimney, and a clean-out door in the floor at the forward part thereof, In testimony whereof I afiix my signature. 55 p I *BURT L. FLAHERTY. 

